From £42,440
Need to find an Extension Builder near you for all your extension buildering work?
Main Construction provides a local, trusted extension bu...
From £42,008
Whites Carpentry & Building prides in delivering an excellent extension buildering service and value for money in PO20 and the surrounding areas. ...
From £43,096
We are a Small Family run business with over 30 years experience in the building trade, Carpentry is my main trade, with NVQ Level 2.
From £42,144
We are a small family run business with over 20 years experience in brickwork, bathroom/kitchen fitting, roofing, landscaping, fencing, tiling and ...
From £41,992
Member since August 2026
H P Building Services Sussex is a one-stop solution for all your extension buildering needs. Establish over 10 years ago and covering 20 miles arou...
From £42,112
, BN18
Futureways Design and Build are here to help customers who need an Extension Builder in PO20. We offer a competitive rate to complete all your exte...
From £41,752
Park Building Services Ltd is a trusted extension builder serving customers in PO20 and the surrounding area. Contact us to today to get a competit...
From £42,200
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £42,376
Giles Dixon is an experienced Project Manager with over 30 years experience, having worked from the ground up starting in 1984 as an apprentice ele...
From £42,128
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

Kitchen extensions in PO20 range from the cheapest of £41,752 (Park Building Services Ltd based in PO9) to the dearest of £43,096 (R&B Property Improvements based in PO9), but these are just estimates based on our database of hourly and daily rates from tradespeople across the country.
The best way to get an accurate price for your kitchen extension is to get actual quotes. Post your job on HaMuch now and we'll send it to extension builders in PO20.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Kitchen Extension near Chichester | £34 | £242 |
| Build A Kitchen Extension near Bognor Regis | £35 | £247 |
| Build A Kitchen Extension near Arun | £35 | £241 |
| Build A Kitchen Extension near Havant & Waterloo | £35 | £248 |
| Build A Kitchen Extension near Havant | £35 | £249 |
| Build A Kitchen Extension near Littlehampton | £35 | £244 |
| Build A Kitchen Extension near Rustington | £36 | £246 |
| Build A Kitchen Extension near Waterlooville | £36 | £250 |
| Build A Kitchen Extension near Horndean | £35 | £253 |
| Build A Kitchen Extension near Portsmouth | £36 | £250 |
Whether you’re looking to extend your kitchen with a side return extension or you want to convert your basement into a liveable space, read our cost guides to get an idea of how much each project costs before getting a more accurate quote from our database of reliable tradespeople.

Underpin a building - £17,725

Two storey extension - £88,337

Build a timber frame extension - £26,225

Build a swimming pool - £81,225

Single storey extension - £59,496

Side return extension - £44,029

Install an RSJ - £2,425

Outbuilding - £10,225

Build a Mansard loft conversion - £52,225

Loft conversion - £35,858

Build a kitchen extension - £42,225

Hip to gable loft conversion - £42,225

Granny annexe - £87,225

Garden office - £10,225

Convert a Garage - £16,225

Garage - £18,725

Build a flat roof extension - £22,225

Build a dormer loft conversion - £42,225

Concrete foundations - £6,475

Convert a bungalow loft - £29,225

Convert a basement - £40,029